... and arc. This machine can process the square tube,round tube stainless steel ,square steel to be circle and ... 0.6mm-2.0mm thickness).In addition,4 kinds of round tube dies attached to the machine, 19mm,16mm,25mm ... ,22mm and 5 kinds of square tube dies:15mm*15mm,20mm*20mm,25mm*25mm,30mm* ... 30mm,40mm*40mm.Meanwhile , there are 2 kinds of ...